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I have a WPF form with a ListBox of items bound to a method that gets the items for the list box. What I want is an additional item at the top of the ListBox that behaves differently to the rest of the items.
For example, let's say I have a list of Authors (databound to a List), and when I select an author it populates another listbox with books from that author. I'd like to have an additional item in the lstAuthors listbox titled Show All, which will populate the other listbox with all books. How can I add this addtional item to my listbox?
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On button click event handler, we add the content of TextBox to the ListBox by calling ListBox. Items. Add method. Now, if you enter text in the TextBox and click Add Item button, it will add contents of the TextBox to the ListBox.
Let's create a new WPF project with the name WPFListBoxControl. Drag one list box and one textbox from the Toolbox. When the user selects any item from the ListBox, it displayed on the TextBox as well. Here is the XAML code in which a ListBox and a TextBox is created and initialized with some properties.
An application developer can create ListBox controls without specifying the contents of each ListBoxItem separately. You can use data binding to bind data to the individual items. The following example shows how to create a ListBox that populates the ListBoxItem elements by data binding to a data source called Colors.
ItemsSource can be data bound to any sequence that implements the IEnumerable interface, although the type of collection used does determine the way in which the control is updated when items are added to or removed. When ItemsSource is set, the Items property cannot be used to control the displayed values.
Use CompositeCollection to merge your collection, with another collection containing your specialized item. Then, use a strongly typed datatemplate for your special select all option that does what you want in that section.
Other options include disabling scrolling in the list view, placing the listview inside a stackpanel, along with your select all, and then placing that stack panel in a scrollviewer, or just putting a button in the UI :)
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